Physics so far...

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Across
  1. 2. a type of wire that prevents electric shocks
  2. 5. water waves travel faster in ____ water
  3. 7. a type of wave where vibrations are parallel to direction of travel
  4. 8. a thousand watts
  5. 10. a type of wave where vibrations are perpendicular to direction of travel
  6. 11. A thin metal wire in a glass case
  7. 12. MCBs do not need to be
  8. 14. waves carry this with them as they travel
Down
  1. 1. the unit of frequency
  2. 3. the maximum displacement of a wave from rest position
  3. 4. the wire that takes current away from the device
  4. 6. the wire that takes current to the device
  5. 9. the distance between the same point on two successive waves
  6. 13. the number of waves per second